X992¶
INTERSECTION OF LINES X2X_6 AND X9X_39
X992 (INTERSECTION OF LINES X2X_6 AND X9X_39) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_992 = INTERSECTION OF LINES X_2X_6 AND X_9X_39."""
from __future__ import annotations
from pathlib import Path
import sympy.geometry as spg
from geometor.model import Model
from geometor.etc.ops import (
central_line,
centroid_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
mittenpunkt_of,
promote_point_to_top,
symmedian_point_of,
)
from geometor.etc.render import write_center_svg
def construct_x_00992(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_992 = INTERSECTION OF LINES X_2X_6 AND X_9X_39 on reference triangle ABC."""
X_992 = eval_trilinear_point(model, A, B, C, '(a**(3)*(b + c) + a**(2)*(b**(2) + c**(2)) - a*b*c*(b + c) - b*c*(b + c)**(2))', ID="X_992", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
central_line(model, X_2, X_6, 2, 6, incident=True)
X_9 = mittenpunkt_of(model, A, B, C, ID="X_9", classes=["center", "incident"])
X_39 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) + c**(2))', ID="X_39", classes=["center", "incident"])
central_line(model, X_9, X_39, 9, 39, incident=True)
X_44 = eval_trilinear_point(model, A, B, C, 'b + c - 2*a', ID="X_44", classes=["center", "incident"])
X_583 = eval_trilinear_point(model, A, B, C, '(a*(a**(2)*b + a**(2)*c + 2*a*b*c - b**(3) - c**(3)))', ID="X_583", classes=["center", "incident"])
central_line(model, X_44, X_583, 44, 583, incident=True)
return promote_point_to_top(model, X_992)
def build_model(
sides: tuple[float, float, float] = (5.0, 6.0, 7.0),
show_guides: bool = False,
) -> Model:
"""Build a `geometor.model.Model` for X_992 on the given reference triangle."""
model = create_model('X_992 = INTERSECTION OF LINES X_2X_6 AND X_9X_39')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_00992(model, A, B, C)
return model
if __name__ == "__main__":
here = Path(__file__).resolve().parent
model_acute = build_model((5.0, 6.0, 7.0))
model_acute.save(str(here / "x-00992.json"))
write_center_svg(
model_acute,
here / "x-00992.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)